100=0.4x+40

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Solution for 100=0.4x+40 equation:


Simplifying
100 = 0.4x + 40

Reorder the terms:
100 = 40 + 0.4x

Solving
100 = 40 + 0.4x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-0.4x' to each side of the equation.
100 + -0.4x = 40 + 0.4x + -0.4x

Combine like terms: 0.4x + -0.4x = 0.0
100 + -0.4x = 40 + 0.0
100 + -0.4x = 40

Add '-100' to each side of the equation.
100 + -100 + -0.4x = 40 + -100

Combine like terms: 100 + -100 = 0
0 + -0.4x = 40 + -100
-0.4x = 40 + -100

Combine like terms: 40 + -100 = -60
-0.4x = -60

Divide each side by '-0.4'.
x = 150

Simplifying
x = 150

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